var rBanList = sys.getFileContent('rbans.txt')
    if(rBanList != undefined) {
    rBanList = rBanList.split(',')
    for(x in rBanList) {
        var length=rBanList[x].length
        if(rBanList[x].length == 0) {
        return;
        }
        if(sys.ip(src).substr(0,length) == rBanList[x]){
            sys.kick(src)
            return;
        }
    }
    }